US9981453B2 - Photochromic polyurethane laminate - Google Patents

Photochromic polyurethane laminate Download PDF

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Publication number
US9981453B2
US9981453B2 US15/256,202 US201615256202A US9981453B2 US 9981453 B2 US9981453 B2 US 9981453B2 US 201615256202 A US201615256202 A US 201615256202A US 9981453 B2 US9981453 B2 US 9981453B2
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US
United States
Prior art keywords
polyurethane
photochromic
diisocyanate
process according
step
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
US15/256,202
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US20160370517A1 (en
Inventor
Xuzhi Qin
Hideyo Sugimura
Michael Boulineau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vision Ease LP
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Vision Ease LP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority to US50182003P priority Critical
Priority to US50181903P priority
Priority to US10/938,275 priority patent/US8298671B2/en
Priority to US13/645,696 priority patent/US8906183B2/en
Priority to US14/563,985 priority patent/US10052849B2/en
Priority to US15/256,202 priority patent/US9981453B2/en
Application filed by Vision Ease LP filed Critical Vision Ease LP
Publication of US20160370517A1 publication Critical patent/US20160370517A1/en
Application granted granted Critical
Publication of US9981453B2 publication Critical patent/US9981453B2/en
Application status is Active legal-status Critical
Anticipated expiration legal-status Critical

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